ZA978715B - Process for the delignification and bleaching of chemical pulp - Google Patents

Process for the delignification and bleaching of chemical pulp

Info

Publication number
ZA978715B
ZA978715B ZA978715A ZA978715A ZA978715B ZA 978715 B ZA978715 B ZA 978715B ZA 978715 A ZA978715 A ZA 978715A ZA 978715 A ZA978715 A ZA 978715A ZA 978715 B ZA978715 B ZA 978715B
Authority
ZA
South Africa
Prior art keywords
delignification
bleaching
chemical pulp
pulp
chemical
Prior art date
Application number
ZA978715A
Other languages
English (en)
Inventor
Johan Devenyns
Eric Chauveheid
Original Assignee
Solvay Interox
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Solvay Interox filed Critical Solvay Interox
Publication of ZA978715B publication Critical patent/ZA978715B/xx

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
ZA978715A 1996-10-11 1997-09-29 Process for the delignification and bleaching of chemical pulp ZA978715B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE9600859A BE1010679A3 (fr) 1996-10-11 1996-10-11 Procede de delignification et de blanchiment de pate a papier chimique.

Publications (1)

Publication Number Publication Date
ZA978715B true ZA978715B (en) 1999-03-29

Family

ID=3890027

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA978715A ZA978715B (en) 1996-10-11 1997-09-29 Process for the delignification and bleaching of chemical pulp

Country Status (5)

Country Link
AU (1) AU4778697A (xx)
BE (1) BE1010679A3 (xx)
ID (1) ID18872A (xx)
WO (1) WO1998016683A1 (xx)
ZA (1) ZA978715B (xx)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE470065C (sv) * 1991-04-30 1996-01-15 Eka Nobel Ab Behandling av kemisk massa med en syra och därefter en magnesium- och kalciumförening vid klorfri blekning
WO1994010375A1 (en) * 1992-10-26 1994-05-11 Kamyr, Inc. Displacement chelate treatment of pulp
DE69420306T2 (de) * 1993-04-20 2000-04-20 Eka Chemicals Ab Verfahren zum Bleichen von Lignozellulose-enthaltendem Zellstoff
US6736934B1 (en) * 1995-02-17 2004-05-18 Andritz Oy Method of pretreating pulp in an acid tower prior to bleaching with peroxide

Also Published As

Publication number Publication date
WO1998016683A1 (fr) 1998-04-23
BE1010679A3 (fr) 1998-11-03
AU4778697A (en) 1998-05-11
ID18872A (id) 1998-05-14

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